|Breeder||J. William Boniface & Francis P. Sears|
|Owner||Bonita Farm & Francis P. Sears|
|Trainer||J. William Boniface|
|Deputed Testamony is a thoroughbred racehorse out of Proof Requested by Traffic Cop. He was born around 1980 in the United States, and was bred by J. William Boniface & Francis P. Sears.|
American Classic Race wins:|
Preakness Stakes (1983)
|Horse (Equus ferus caballus)|
Deputed Testamony (foaled 1980 in Maryland) is an American Thoroughbred racehorse best known for winning the Classic Preakness Stakes. Deputed Testamony is the last of eight Maryland-breds to win the Preakness Stakes and is one of only eleven colts from the state to win a triple crown race.
Bred and raced by Bonita Farm and Francis P. Sears, he was trained by J. William Boniface of Bonita Farm. His sire was Traffic Cop and his dam was Proof Requested. Damsire, Prove It, was a multiple stakes winner whose victories included the prestigious Santa Anita Handicap (1961) and Hollywood Gold Cup (1962).
The colt made seven starts at age two, notably winning the one mile Play The Palace Stakes at the Meadowlands Racetrack in track record time. In his three-year-old season, Deputed Testamony did not run in the Kentucky Derby. Leading up to his win in the Preakness Stakes, the second leg U.S. Triple Crown series, Deputed Testamony won the Keystone Stakes at Pennsylvania's Keystone Racetrack and the Federico Tesio Stakes at Pimlico Race Course in Baltimore, Maryland. After defeating Kentucky Derby winner Sunny's Halo in the Preakness at Pimlico, in the third leg of the Triple Crown, the Belmont Stakes at Elmont, New York, Deputed Testamony finished sixth to winner, Caveat. Racing at Bowie Race Track in Maryland, the colt won the Governor's Cup Handicap, and scored his second Grade I win of the year in the Haskell Invitational Handicap at Monmouth Park Racetrack in New Jersey.
At age four in 1984, Deputed Testamony returned to race two more times, winning both. In his second win, at Pimlico Race Course, he set the second track record of his career in the 11/16 mile City of Baltimore Handicap but came out of it with an injury that would end his racing career.
As a sire
Syndicated and retired to stud at his Bonita Farm, his progeny have met with modest racing success but he is the damsire of:
- Whitmore's Conn - won the Grade I Sword Dancer (2003) and had back-to-back wins in the Grade III Bowling Green Handicap (2002–2003).
- Bellamy Road - George Steinbrenner's winner of the Grade I Wood Memorial Stakes (2005)
In 2004, Deputed Testamony was pensioned at Bonita Farm.